Sodium silicate combining castable aggregates and the powder of sources, both available aluminum silicate, silica, half siliceous, can also be used for magnesia, magnesium aluminum refractory, etc. Since silicate more viscous, mixing and vibration time. And appeared in the 1970 s instant solid sodium silicate, refractory aggregate, powder mixed together, field water mixing, pouring, easy to use.

The castable as heated to 800-1000 ℃, sodium fluoride and sodium oxide melt, liquid volume increase, silica gel effect is abate, so lower refractoriness under load, and sodium silicate combining castable use temperature is relatively low, the use of high aluminum temperature is 1400 ℃, clay and half siliceous using temperature is 1000 ℃, magnesite using temperature is 1600 ℃. Therefore, we should try to reduce the amount of sodium silicate and sodium fluosilicate or with high modulus sodium silicate. But high sodium silicate combining castable at room temperature strength, moderately reduced smaller heating process, thus has high temperature wear resistance. Particularly resistant to acid medium and except hydrofluoric acid sodium salt melt erosion. Clay and silica sodium silicate pouring acid degree is more than 93%, can satisfy the use requirement of acid and thermal devices.